Description
Rotary FC522-25 Slack Latch Arm Spring for 4-Post Lift
The slack latch arm spring is located at each of the four corners of many Rotary 4-post lifts, attached to the slack latch assembly. This extension spring provides the return force that keeps the latch engaged. A worn or broken spring prevents proper latch engagement, creating an unsafe lift condition. Verify your lift model before ordering.
Product Information
- Brand / Equipment: Rotary Lift
- Manufacturer / Reference Part Number: FC522-25
- Store SKU: ROY2225
- Component: Slack Latch Arm Spring (Extension Spring)
- Assembly Reference: Component of Rotary FC5417 and FC5416 assemblies
- Location: All 4 corners of the lift, attached to the slack latch
- Listed Application: Rotary SM, AR, CWA, QL, and SMO series 4-post lifts
Compatible Makes / Verified Fitment Models
AR Series: AR12, AR14, ARO14, AR55-45, AR55-51, AR90, AR120S, AR120L, AR120EL1, AR122S, AR122L, AR122EL2, AR123, ARO123
SM Series: SM12, SM14, SM18, SM25, SM30, SM40-43, SM55-45, SM55-51, SM55W51, SM90, SM91, SM120, SM121S, SM121L, SM121EL2, SM122S, SM122L, SM122EL2, SM123, SMO122, SMO123, SM180, SM181, SM250, SM270
CWA Series: CWA90, CWA120
QL Series: QL4P, QLRP100, QL4P101
If your model is not listed, call 866-902-6060 before ordering to confirm fitment.
Replacement / Cross-Reference Numbers
- Rotary FC522-25 (component of FC5417 and FC5416 assemblies)
Fitment and Ordering Notes
If your lift model is not listed above, call 866-902-6060 before ordering. Inspect all four corner latch assemblies when replacing this spring.





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